{"id":"CVE-2025-0825","aliases":["DEBIAN-CVE-2025-0825","EUVD-2025-1886","GHSA-65rj-829h-6g8x","OESA-2025-1116","OESA-2025-1117","OESA-2025-1118","OESA-2025-1119","UBUNTU-CVE-2025-0825"],"status":"published","title":"CRLF injection in Cpp-httplib","description":"cpp-httplib version v0.17.3 through v0.18.3 fails to filter CRLF characters (\"\\r\\n\") when those are prefixed with a null byte. This enables attackers to exploit CRLF injection that could further lead to HTTP Response Splitting, XSS, and more.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00409,"percentile":0.35461,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-113"],"published":"2025-02-04T14:11:51Z","modified":"2026-10-28T10:58:55Z","fixes":[{"ecosystem":"Debian:13","package":"cpp-httplib","fixed_in":["0.18.7-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"cpp-httplib","fixed_in":["0.18.7-1"],"sources":["osv"]},{"ecosystem":"openEuler:22.03-LTS-SP3","package":"cpp-httplib","fixed_in":["0.12.4-3.oe2203sp3"],"sources":["osv"]},{"ecosystem":"openEuler:22.03-LTS-SP4","package":"cpp-httplib","fixed_in":["0.12.4-3.oe2203sp4"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS","package":"cpp-httplib","fixed_in":["0.14.0-3.oe2403"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP1","package":"cpp-httplib","fixed_in":["0.14.0-3.oe2403sp1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"cpp-httplib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.11.4+ds-1","0.11.4+ds-1+deb12u1","0.11.4+ds-2","0.11.4+ds-3","0.13.1+ds-1","0.14.0+ds-1","0.14.1+ds-1","0.14.1+ds-2","0.14.2+ds-1","0.14.3+ds-1","0.14.3+ds-1.1","0.14.3+ds-1.1~exp1","0.15.3+ds-1","0.15.3+ds-2","0.15.3+ds-3","0.16.0+ds-1","0.16.3+ds-1","0.16.3+ds-2","0.18.0+ds-1","0.18.7-1","0.20.1+ds-3","0.25.0+ds-1","0.26.0+ds-2","0.41.0+ds-1","0.41.0+ds-2","0.41.0+ds-3","0.41.0+ds-3~bpo13+1"]},{"source":"osv","ecosystem":"Debian:13","package":"cpp-httplib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.18.7-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"cpp-httplib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.18.7-1"}]}]},{"source":"osv","ecosystem":"openEuler:22.03-LTS-SP3","package":"cpp-httplib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.12.4-3.oe2203sp3"}]}]},{"source":"osv","ecosystem":"openEuler:22.03-LTS-SP4","package":"cpp-httplib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.12.4-3.oe2203sp4"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS","package":"cpp-httplib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.14.0-3.oe2403"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP1","package":"cpp-httplib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.14.0-3.oe2403sp1"}]}]}],"products":[{"vendor":"yhirose","product":"cpp-httplib"}],"references":[{"url":"https://github.com/yhirose/cpp-httplib/commit/9c36aae4b73e2b6e493f4133e4173103c9266289","tags":["patch","Patch","fix","report"]},{"url":"https://advisory.checkmarx.net/advisory/CVE-2025-0825/","tags":["Exploit","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-0825","tags":["advisory"]},{"url":"https://advisory.checkmarx.net/advisory/CVE-2025-0825"},{"url":"https://github.com/advisories/GHSA-65rj-829h-6g8x"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/0xxx/CVE-2025-0825.json","tags":["advisory"]},{"url":"https://github.com/yhirose/cpp-httplib","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-0825","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1116","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1117","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1118","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1119","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-0825","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-0825","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2025-0825","title":"CRLF injection in Cpp-httplib","description":"cpp-httplib version v0.17.3 through v0.18.3 fails to filter CRLF characters (\"\\r\\n\") when those are prefixed with a null byte. This enables attackers to exploit CRLF injection that could further lead to HTTP Response Splitting, XSS, and more.","status":"published","published":"2025-02-04T14:11:51.741Z","modified":"2025-05-23T12:50:55.298Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-113"],"updated_at":"2026-11-02T14:32:53.475217Z"}],"euvd":[{"id":"EUVD-2025-1886","description":"cpp-httplib version v0.17.3 through v0.18.3 fails to filter CRLF characters (\"\\r\\n\") when those are prefixed with a null byte. This enables attackers to exploit CRLF injection that could further lead to HTTP Response Splitting, XSS, and more.","status":"published","published":"2025-02-04T14:11:51Z","modified":"2025-05-23T12:50:55Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T20:32:39.383071Z"}],"ghsa":[{"id":"GHSA-65rj-829h-6g8x","title":"cpp-httplib version v0.17.3 through v0.18.3 fails to filter CRLF characters (\"\\r\\n\") when those...","description":"cpp-httplib version v0.17.3 through v0.18.3 fails to filter CRLF characters (\"\\r\\n\") when those are prefixed with a null byte. This enables attackers to exploit CRLF injection that could further lead to HTTP Response Splitting, XSS, and more.","status":"published","published":"2025-02-04T15:31:37Z","modified":"2025-08-04T15:31:07Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-113"],"updated_at":"2026-11-02T15:03:10.73907Z"}],"nvd":[{"id":"CVE-2025-0825","description":"cpp-httplib version v0.17.3 through v0.18.3 fails to filter CRLF characters (\"\\r\\n\") when those are prefixed with a null byte. This enables attackers to exploit CRLF injection that could further lead to HTTP Response Splitting, XSS, and more.","status":"published","published":"2025-02-04T15:15:19.42Z","modified":"2026-06-17T08:27:12.473Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-113"],"updated_at":"2026-11-02T14:10:50.916773Z"}],"osv":[{"id":"CVE-2025-0825","title":"CRLF injection in Cpp-httplib","description":"cpp-httplib version v0.17.3 through v0.18.3 fails to filter CRLF characters (\"\\r\\n\") when those are prefixed with a null byte. This enables attackers to exploit CRLF injection that could further lead to HTTP Response Splitting, XSS, and more.","status":"published","published":"2025-02-04T14:11:51.741Z","modified":"2026-10-28T10:58:55.65608969Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-113"],"updated_at":"2026-11-02T15:44:45.712478Z"},{"id":"DEBIAN-CVE-2025-0825","description":"cpp-httplib version v0.17.3 through v0.18.3 fails to filter CRLF characters (\"\\r\\n\") when those are prefixed with a null byte. This enables attackers to exploit CRLF injection that could further lead to HTTP Response Splitting, XSS, and more.","status":"published","published":"2025-02-04T15:15:19.42Z","modified":"2026-09-01T20:05:40.317052292Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:44.747956Z"},{"id":"OESA-2025-1116","title":"cpp-httplib security update","description":"A C++11 single-file header-only cross platform HTTP/HTTPS library. It\u0026amp;apos;s extremely easy to setup. Just include httplib.h file in your code!\r\n\r\nSecurity Fix(es):\n\ncpp-httplib version v0.17.3 through v0.18.3 fails to filter CRLF characters (\u0026quot;\\r\\n\u0026quot;) when those are prefixed with a null byte. This enables attackers to exploit CRLF injection that could further lead to HTTP Response Splitting, XSS, and more.(CVE-2025-0825)","status":"published","published":"2025-02-14T11:08:12Z","modified":"2026-08-18T01:18:46.7809161Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:42.253598Z"},{"id":"OESA-2025-1117","title":"cpp-httplib security update","description":"A C++11 single-file header-only cross platform HTTP/HTTPS library. It\u0026amp;apos;s extremely easy to setup. Just include httplib.h file in your code!\r\n\r\nSecurity Fix(es):\n\ncpp-httplib version v0.17.3 through v0.18.3 fails to filter CRLF characters (\u0026quot;\\r\\n\u0026quot;) when those are prefixed with a null byte. This enables attackers to exploit CRLF injection that could further lead to HTTP Response Splitting, XSS, and more.(CVE-2025-0825)","status":"published","published":"2025-02-14T11:08:13Z","modified":"2026-08-18T01:18:46.706326765Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:42.253598Z"},{"id":"OESA-2025-1118","title":"cpp-httplib security update","description":"A C++11 single-file header-only cross platform HTTP/HTTPS library. It\u0026amp;apos;s extremely easy to setup. Just include httplib.h file in your code!\r\n\r\nSecurity Fix(es):\n\ncpp-httplib version v0.17.3 through v0.18.3 fails to filter CRLF characters (\u0026quot;\\r\\n\u0026quot;) when those are prefixed with a null byte. This enables attackers to exploit CRLF injection that could further lead to HTTP Response Splitting, XSS, and more.(CVE-2025-0825)","status":"published","published":"2025-02-14T11:08:13Z","modified":"2026-08-18T01:18:46.832731954Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:42.253598Z"},{"id":"OESA-2025-1119","title":"cpp-httplib security update","description":"A C++11 single-file header-only cross platform HTTP/HTTPS library. It\u0026amp;apos;s extremely easy to setup. Just include httplib.h file in your code!\r\n\r\nSecurity Fix(es):\n\ncpp-httplib version v0.17.3 through v0.18.3 fails to filter CRLF characters (\u0026quot;\\r\\n\u0026quot;) when those are prefixed with a null byte. This enables attackers to exploit CRLF injection that could further lead to HTTP Response Splitting, XSS, and more.(CVE-2025-0825)","status":"published","published":"2025-02-14T11:08:13Z","modified":"2026-08-18T01:18:46.78453519Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:42.253598Z"},{"id":"UBUNTU-CVE-2025-0825","description":"cpp-httplib version v0.17.3 through v0.18.3 fails to filter CRLF characters (\"\\r\\n\") when those are prefixed with a null byte. This enables attackers to exploit CRLF injection that could further lead to HTTP Response Splitting, XSS, and more.","status":"withdrawn","published":"2025-02-04T15:15:00Z","modified":"2026-03-02T12:00:56.320624Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T16:55:18.664792Z"}]}}